Burner for gaseous and liquid fuels



H. NETTGENS.

BURNERv FOR GASEOUS AND LIQUID FUELS.

APPLlcAnoN FILED FEB. s, |922.

1,415,383. Patented May 9, 1922.

entren stares HENRICI-I NETTGENS, OF ALBISRIEDEN,

NEAR ZURICH, SWITZERLAND, vASSIG-NOR TO EDUARD STRAUB-KELLE'R, OF SULGEN, SVJITZERLAND.

BURNER FOR GASEOUS AND L'IQUXD' FUELS.

Specification of Letters Patent.

Patented May 9, 1922.

Application led February 3, 1922. Serial No. 533,811.

To all fr0/10m t may; concer/rt.'

Be it known that HEINRICH NETTGENS, acitizen of the Republic oi' Switzerland, residing at Albisrieden, near Zurich, Switzerland, has invented certain new and useful Improvements in Burners for Gaseous and Liquid Fuels, (for which l have filed application in Switzerland Dec. 3, 1920, No. G 9.675; Germany July 12, 1921, No. N 20,123,) ot which the following is a specication, reference being had therein to the accompanying' dra-wing.

The object of the present invention is a burner for gaseous and liquid fuels. The burner comprises a nozzle having' a bore for the passage of air in the lirst case, i. e. when used for burning gaseous fuels, and of oil in the second case, i. e. when used for burning oil or liquid fuels, the amount of the medium passing' through said bore being` controlled by means ot' a regulating device. Further an adjustable nozzle is provided forming in conjunction with the first mentioned nozzle an openingthat can be adjusted or closed by means of the adjustable nozzle and which forms the continuation of a channel adapted to guide the gas in the first case and the air in the second case. As both supply passages are controlled by regulating means, a determined quantity of air that is necessary tor the combustion can be supplied to the fuel, the amount ot' which is chosen with regard to the temperature desired, whereby any excess of air is avoided. Moreover the burner is so designed that a better mixture of the medium is effected than in the case with the hitherto known burners whereby in conjunction with the possibility or" regulating' of the two supply passages a perfect combustion results.

rllhe object oit the present invention is illustrated by way of example in the accompanying drawings, in which:

Fig. 1 is a side elevation,

Fig. 2 is a vertical longitudinal section along line H-H of Fig. 1, and

Fig. 3 is a section along line Ill-lll of Fig. 1.

The illustrated burner comprises a main body 1 having a centrally situated nozzle 2, the bore 3 of which terminates in a tunnelshaped enlargement e adjoining to a contracted portion. 5 denotes an annular channel to which a supply branch 6 joins. At its front end the wall of the nozzle 2 serves in cooperation with the adjustable nozzle 7 to form an annular channel 8 (Fig. 2) which is controlled by the adjustable nozzle 7; in Fig. 2'the channel 8 is shown closed. The adjustable nozzle 7 is slidably mounted upon the body 1 of the burner and is in operative connection by means of two arms 9 with a hand wheel 10. The arms 9 are slidably tted to the body 1 by the set screws 11, and the hand wheel 10 is rotatably mounted upon a screw threaded spindle 12 fixed to the body 1. 13 denotes a stuiiing boxinterposed between the parts 1 and 7. Fig. 2 the supply branch 6 and the annular channel 5 are in connection with the bore 3 of the nozzle 2 by means of bore 111 provided near the rear end of the bore 3. 15 denotes a supply branch leading to the bore 3 of the nozzle 2 by means of a supply channel 16, controlled by a valve 17 and arranged so as to cause a zigzag-shaped course for the mediurnpassing through said channel.

rlhe burner with its various parts in the position shown in Figs. 2 and 3 is ready for burning a liquid fuel, for instance oil. The

branch 6 is thereby intendedtor the supply of air andthe branch 15 for the supply of oil. At first air is caused to pass through the branch 6 in the direction of the arrow indicated into the channel 5 whereby part of the air flows through the channel 14 into the bore 3. rl`hen the valve 17 controlling the oil supply is opened. The incoming` oil is projected at right angles to the air current in the bore 3 whereby an efficient mixture between the oil and the air occurs thus er"- fecting a good Vaporizing of the oil already within the nozzle 2. By a suitable displacement of the adjustable nozzle 7 effected by turning the hand wheel 10 the annular channel 8 is opened. The mixture leaving the nozzle 2 at its front end is now whirled round by the air issuingirom the annular channel 8 as this air impinges upon the fuelair mixture leaving the nozzle 2 in a direction that is diierent to the direction of the iiow of the mixture, thereby the vaporization of the oil and a good mixture of the latter with the air for combustion is caused. rlhe valve 17 permits the adjustment ot the oil supply in order to attain a desired temperaturel and by means of the adjustable nozzle 7 the supply of air can be so regulated that As will be seen in neither too little air nor an excess of air is admitted, so that a perfect smokeless combustion takes place.

lf the above described burner is intended o to be supplied with a gaseous fluid instead of with oil, the channel 1l, Which is tapped, is closed by means ol a long` screw which is screwed into the body 1 replacing the screw 18 (Fig. 2). ln this case the air is admitted to the bore 8 through the branch 15 and the channel 16 While the gas is supplied through the branch 5, the bore ol 'which is larger than that of the branch 15, and through the annular channel 5. By means ol the adjustable nozzle 7 and the valve 1'? the quantity ot' the fuel and ol the air can be so regulated that the desired temperature is attained and that a perfect smokeless combustion takes place.

l claim:

1. i burner `lor gaseous and liquid fuels, iaving in combination a nozzle with a bore `hat is tunnel-shaped one end and adapted t the assage or' a medium constituting an a combustible, regulating device trolling the quantity ot the medium through said nozzleT7 a second nozzle v arranged to said hrst nozzle and apt to be displaced in the axial direc- LSO tion tively to the former, the bore oi' the second nozzle and the outer wall ol1 the first nozzle l'orining together an annular channel the -width ot which can be adjusted by said d' ilacemcnt ot said second nozzle and the wall oli said annular channel being so 'l the medium passing through i that hannel flows in an oblique direction to icdiun leaving the tunnel shaped end i l o'. d nozzle ttor causing an etlicient i ne' re of said mediums. a ring ivall around s st mentioned nozzle and forming an a=N i i' channel With the latter that is a continuagion ol the atore mentioned annular clianneh means to provide for a passage of i5 the medium trom Said annular channel to the me ot the {irst nozzle` means Vto admit t annular channel medium constitutelement oli combustible, anc means t said di splacement ol the adjustable o regulate lthereby the quantity respective mediums supplied to said A burner for gaseous and liquid Jfuels7 in combination a nozzle with a bore that is funnel shaped at one end adapted 'lor the uassage ol a medium constituti an element o? a combustilale.y a regulating device for rintroling the quantity ot the medium passe through said nozzle a second nozzle coaxially arranged to sait. lirst nozzle and adapted to be displaced in the axial direction relatively to the former, the bore of the ond nozzle and the outer Wall of the first nozzle forming` together an annular channel the Width ol which can bc adjusted by said displacement o' said second nozzle and the outer wall ot said annular channel being so shaped that the medium passing through said channel flows in an oblique direction to the medium leaving the tunnel shaped end oi`Y said first nozzle, for causing an eliicient mixture ol said mediums7 a ring` Wall around said first mentioned nozzle and forming an annular channel with vthe latter that is a continuation ot the ettore-mentioned annular channel, means to admit to said annular channel a medium constituting an element oit a combustiblen a screuT threaded spindle lined to the body ol the lirst mentioned nozzle7 an internally threaded member rotatable on the spindle, an operative connection betv-reen the second nozzle and the rotatable threaded memberv whereby a turning ol said member causes a displacement ot said second nozzle and thereby a regulation ot the quantity oit the pective mediu s supplied to said annular channel.

3. ,si burner 'tor gaseous and liquid fuels, having in combination nozzle with a bore 'that is tunnel-shaped at one end and adapted for the passage oit a medium constituting an element. ol2 a combustible, a regulating device l'or controlling the quantity of the medium passing through said nozzle, a second nozzle coaxially arranged to said lirst nozzle and adapted to be displaced in the axial direction relatively to the 'loi-mei; the bore ot the second nozzle and the outer 'wall oli the lirst nozzle 'forming together an annular channel the Width ot which can be adgi usted by said displacement ol' said second nozzle and the outer Wall of said annular channel being so shaped that the medium passingl through said channel flows in an oblique direction to the medium leaving the 'tunnel shaped end ol' said iirst nozzle for causingan ellicient mixture of said mediums, a ringvall around said lirst men tioned nozzle and 'forming an annular channel with the latter that is a continuation ol the afore mentioned annular channel`r means `to provide for a passage oil? the medium 'trom said annular channel to the bore ot the lirstnozn zle, means to admit to annular channel a medium constituting an element oit a conibustible, means to etliect said displacement ol the adjustable nozzle and to regulate thereby the quantity of the resoectiif'e mediums supplied to said annular channel, and a get screw closing` said means to provide a passage of the medium said annular channel to the bore ot the lirst nozzle when the burner is used 'for burning gaseous fuel.

lu testimony Whereo'l5 l my signature.

llElNRlCl-l NETTGENS. 

